Fingertip dispenser, typically for a cosmetic product

ABSTRACT

A product dispenser includes: a) a tubular body containing the product and a skirt open at its lower portion and closed at its upper portion by an arch equipped with at least one opening, b) a piston capable of sliding, in a leak-proof manner, inside the skirt, so as to compress the product, and force the passage of the product through the opening, and c) a cap designed to seal the opening, cooperating reversibly with the tubular body at its upper part or with said arch.

FIELD OF THE INVENTION

This invention relates to the field of dispensers for cosmetic products,and typically for cosmetic products of a paste-like consistency.

PRIOR ART

Cosmetic products are packaged in packagings that are selected accordingto the nature of the cosmetic product, thus, for example:

-   -   very fluid products, typically liquids, are often packaged, in        aerosol spray cans or in containers equipped with a dispensing        pump,    -   products of a paste-like consistency, for example lipstick        products, are packaged in lipstick tubes that constitute both a        packaging and an applicator, in as much as the user moves the        tube itself in order to apply to their lips the upper end of the        rouge contained inside the tube,    -   products of a solid consistency, for example blocks of makeup        powder, are typically packaged in compacts, a puff serving as an        applicator included with each compact.

Problems Posed

On the one hand, as is apparent with the cosmetic products and theirapplicators according to the prior art, to a given cosmetic productcorresponds a specific method of packaging. One object of the presentinvention is to furnish a cosmetic product dispenser suited to a widerange of different products.

On the other hand, in the case of the packaging of cosmetic productshaving a paste-like consistency, such as lipsticks, eye shadow or otherproducts applied in a line, the user generally needs a range of shadesfor the same base product, so as to potentially coordinate the makeupcolors with those of articles of clothing, or a series of means ofapplication, depending on the degree of fineness of the line desired.

Furthermore, to impose a given applicator also gets back to imposingupon any user the same means of application, corresponding to the“average” requirements, whereas requirements and tastes may vary fromone person to another. In particular, achieving a fine application,either very localized or with a fine line, is difficult if notimpossible to do with conventional applicators.

Thus, another object of the present invention is to furnish cosmeticproduct dispensers that are sufficiently economical and sufficientlycompact to be capable of being typically marketed either individually orin the form of a set of dispensers, so that, even with one handbag,neither the price or the overall dimensions are an obstacle to usingseveral of these dispensers, differing by the shades of the cosmeticproducts and/or the nature or degree of fineness of the means ofapplication.

Finally, in the field of cosmetic products, there is an on-goingnecessity to renew the product supply, i.e., to continuously offer brandnew products and services or brand new functionalities.

The invention also aims to resolve other problems that will beintroduced later.

DESCRIPTION OF THE INVENTION

According to the invention, the dispenser of a product, typically apaste-like cosmetic product, comprises:

a) a tubular body containing said product and comprising a skirt open atits lower portion and closed at its upper portion by an arch equippedwith an opening, or possibly with multiple openings, having a totalsurface area S′ enabling the passage of said product with a view to itsuse or application onto a support,

b) a piston capable of sliding, in a typically leak-proof manner, insideof said skirt, over a stroke height h, so as to form a variable-volumechamber containing said product and to compress said product with a viewto forcing the passage of said product through said opening,

c) a cap designed to seal said opening, cooperating reversibly with saidtubular body at its upper part or with said arch,

and is characterized in that said skirt has an interior horizontalsection with a surface area S and with a smaller interior dimension dranging typically from 10 mm to 20 mm, said stroke height h rangingtypically from 10 to 25 mm, so as to simultaneously, and typically witha single hand, enable said dispenser to be grasped manually, typicallybetween the thumb and middle finger, and said piston to be pushedmanually using one finger, typically the index finger, so as to force,in a typically controlled manner, said passage of said product throughsaid opening having a surface area S″<S, typically selected with respectto the nature of said product, said dispenser being an extension of saidfinger and thereby forming a so-called “fingertip” dispenser that is atonce economical, compact and versatile.

By means of its interior section S and the piston stroke h, thedispenser according to the invention makes it possible to operate thepiston with one finger, typically over its entire stroke, while at thesame time ensuring that the dispenser is grasped manually with thefingers of the same hand, so as to have in one hand the dispenser andits exposed contents, the other hand being free, for example, to hold amirror.

In the case of the dispenser according to the invention, it isimportant, therefore, that a finger, e.g., the index finger, be able toslip into the tubular body in order to push the piston as said productis being depleted.

The dispenser according to the invention makes it possible to solve theproblems posed.

As a matter of fact, on the one hand, the dispenser according to theinvention is not limited to the packaging of a specific product, but ofan entire series of different products, the single common point amongall of these products being their ability to flow through an opening,subject to the manual pressure exerted on the piston. The lesser theability of the product to deform under stress, the larger the openingwill be. A part from the not so deformable solid products and the liquidproducts having too low of a viscosity, which would pass through saidopening by mere gravity alone, the majority of the other products, whichcorresponds to a wide range of different products, can be packaged in adispenser according to the invention.

On the other hand, the dispensers according to the invention respond tothe double concern for being compact, with regards to their dimensions,and relatively economical by reason of the small number of parts andtheir ease of assembly, with the result being that they make it possibleto have at one's disposal, in a single handbag, as many dispensers asdesired.

Lastly, the dispensers according to the invention also open the way fornew objects that depart radically from conventional dispensers, andthereby contribute to meeting the on-going need for novelty, inparticular as concerns the cosmetic product packaging market.

DESCRIPTION OF THE FIGURES

All of the figures relate to the invention.

FIGS. 1 a to 1 d relate to an exemplary embodiment of a dispenser 1,closed in FIGS. 1 a to 1 d, and open in FIG. 1 e.

FIG. 1 a is an axial section of a dispenser 1 with a flat grate 200, cutalong the vertical axis 10 A-A in FIG. 1 b.

The piston 3, in its end of travel position, has been shown by a dottedline.

FIG. 1 b is a side view of the dispenser 1.

FIG. 1 c is a perspective view from the top and side of the dispenser 1.

FIG. 1 d is a perspective view from underneath and to the side of thedispenser 1.

FIG. 1 e is a perspective view of the open dispenser 1, the cap 4 havingbeen separated from the body 2.

FIGS. 2 a to 2 d are top views of the arch 20 of the body 2 illustratingselected types of openings 22 and selected dispenser shapes (crosssection):

multiple openings 222 forming a grate in FIG. 2 a,

multiple openings 222 arranged radially in FIG. 2 b,

multi-lobe opening formed by radial extensions 203 in FIG. 2 c,

radial-slotted opening 221 in FIG. 2 e,

circular center opening 220 in FIG. 2 d.

FIG. 2 f is a partial section in the vertical plane E-E of FIG. 2 e, andD-D of FIG. 2 d, showing lips 2200, 2210 surrounding said opening 220,221 and potentially forming a means of application of said product 5.

FIGS. 3 a and 3 b are partial views in a vertical plane of a dispenser1, showing two ways of rendering the cap 4 integral with the body 2:

FIG. 3 a shows the cooperation between the cap 4 and the body 2 by meansof a hinge 62 enabling the cap 4 to rotate in relation to the body 2,and a means of fastening 64 by cooperating male and female elements, thecap 4 including an arm that can be snapped on to a hinge pin of the body2,

FIG. 3 b shows the case where the cap 4, together with the body 2, formsa single piece, typically made of a molded plastic material, a flexibletab 63 joining together the two elements 2 and 4.

FIGS. 4 a to 4 c are partial views in a vertical plane of a dispenser 1,showing two other types of arches: FIG. 4 a shows the case of adispenser 1′ whose arch 20 forms a domed grate 201, while FIG. 4 b showsthe case of a dispenser 1″ whose arch 20 forms a dished grate 202. Inthe latter case, the cap 4 is equipped with a means of application 43coming into contact with said dished grate 202, so as to be able totransfer said product onto said means of application 43.

FIG. 4 c shows the case of a dispenser 1′″ for a solid product, with anopening having a surface area S′ slightly smaller than surface area S,said arch 20 then being limited to a circular rib 204. Said cap 4includes a means of application 43, typically compressible orexpansible, coming to rest against said product 5, shown in this figure(but not shown in FIGS. 1 a, 4 a, 4 b and 5 e).

FIGS. 5 a to 5 d show various types of “plane” dispenser sets 8.

FIG. 5 a is a top view of a set of “plane” dispensers 8 including asupport 80, 81, 82 for six dispensers 1, 1′, 1″, 1′″.

FIGS. 5 b to 5 e are partial sectional views in a vertical plane,showing three arrangements of a set 8 including as many positivelyconnecting cavities 800, 810, 820 as dispensers 1, 1′, 1″, 1′″ to bebrought together, or a set 8′ forming a variant of said set 8.

In FIGS. 5 b to 5 d, the dispenser, prior to being opened, is shown onthe left side, and, on the right side, the portion of the dispenser thathas been manually separated from the support 80, 81, 82.

In the case of FIG. 5 b, the entire dispenser 1, 1′, 1″, 1′″ can beremoved, which is temporarily assembled to the support 80 by means ofcavities 800.

In the case of FIG. 5 c, only the body 2 of the dispenser 1, 1′, 1″, 1′″can be removed, its cap 4 having been fastened to the support 81 by anassembly means such as a friction-type connection or by gluing 810.

In the case of FIG. 5 d, the support 82 includes as manycap-forming-walls 820 as dispensers 1, 1′, 1″, 1′″ to be made integralwith one another.

FIG. 5 e shows the case of a set 8′, which is a variant of the precedingset 8, in which, for illustrative purposes, the support 83 includes anopen cavity 830 making it possible to slide a piston 3 and to connect acap 4, so as to form a chamber 9 for said product 5, typically anagglomerated powder, and another type of cavity 831 with a bottom,capable of containing a means of application 43 mounted on a cap 4′.

FIG. 6 is a partial sectional view along the vertical axis, of a set of“vertical” dispensers 1, 1′, 1″, 1′″ rendered integral with each otherin the form of a stick. To achieve this, the upper profile 42 of the capof a given dispenser in enables it to cooperate with the lower part 21of the “following” dispenser 1 _(n+1) situated “above it,” the lowerportion of said given dispenser cooperating in like manner with the capof the “preceding” dispenser 1 _(n−1) situated “beneath it.”

DETAILED DESCRIPTION OF THE INVENTION

According to the invention, said skirt 21 of said body 2 may have around, oval or square interior and/or exterior cross section, saidinterior cross section corresponding to that of the piston 3 and havinga surface area S typically ranging from 50 mm² to 400 mm², and morepreferably from 150 to 250 mm².

FIGS. 2 a, 2 b and 2 e likewise show some examples of cross sections,the invention not being limited to a particular cross-sectional shape.Nevertheless, the shape and surface area S must be such that it ispossible to manually push back said piston 3 to its end of travelposition so as to be able to use up all of the product 5 containedinside the chamber 9 of the dispenser 1.

According to a first variant of the invention shown in FIG. 2 c, saidarch 20 may include or form at least one radial extension or projection203 partially obstructing said surface area S, such that the surfacearea S′ of said opening 22, 222 typically ranges between 0.2.S and0.8.S, said surface area being selected, in particular, with respect tothe viscosity of said product, and so as to typically form multipleopenings.

For illustrative purposes, four right-angled radial projections havebeen shown in FIG. 2 c.

According to a second variant of the invention, illustrated inparticular in FIGS. 2 a and 2 b, said arch 20 may include or form agrate, typically flat 200, but potentially domed 201, or dished 202,equipped with a large number of openings, said number typically rangingfrom 5 to 50, and having a total surface area S′<0.7.S for all of theseopenings combined.

According to a third variant of the invention shown in figure, 2 e, saidopening 22 may be a radial slot 221 having a length d′, typically closeto d, and having a surface area S′<0.5.S, said radial slot 221 capableof forming potentially flexible lips, typically being parallel, andtypically angled so as to form an applicator of said product over awidth d′, as shown in FIG. 2 f.

According to a fourth variant of the invention shown in FIG. 2 d, saidopening 22 may be a circular opening 220 having a diameter typicallysmaller than 5 mm, and a surface area S′<0.3.S, and capable of typicallyforming a circular lip 2200 so as to ensure a localized or spotapplication of said product 5, as shown in FIG. 2 f.

According to the invention, said arch 20, equipped with said opening 22,220, 221, 222 may form a means of application of said product 5. FIG. 2f shows this possibility thanks to typically flexible lips 220, 2210.

However, as shown in FIG. 1 a, the portion of said arch 20 comprisingsaid opening 22, 222 may form an axial projection forward from said arch20, typically by a few mm, in particular so as to facilitate theapplication of said product 5 onto said support and to prevent it fromspreading out over said dispenser, but also, as will be pointed outbelow, to seal said opening 22, 222.

In particular, in the case where the dispenser 1″ includes a dished arch20, in particular with a dished grate 202, as shown in FIG. 4 b, saidcap 4 may include a means of application 43 of said product 5. Thismeans of application may consist of a textile-based material and formthe equivalent of a puff.

More preferably, and as shown in FIGS. 1 a, 4 a and 4 b, said piston 3may include a head 30 whose top surface 300 is parallel to said arch 20or to the bottom surface 25 of said arch 20, so as to be able to expelnearly all of said product 5 contained inside said body 2 or saidchamber 9, when said piston 3 is at its end of travel position.

Typically, and as shown in FIGS. 1 a, 4 a and 4 b; said piston 3 mayinclude a lower skirt 31 which, together with said head 30, typicallyforms a blind hole 32, so as to facilitate the sliding of said piston 3inside of said skirt 21 of said body, and so as to enable the insertionof said finger ensuring said thrust into said blind hole. Typically,this lower skirt may have a height of a few mm.

According to the invention, said cap 4 may typically include a head 40and a skirt 41 cooperating reversibly with said tubular body 2, saidskirt 41 having a height typically ranging from h/2 to h, in particularwhen the cap or its skirt 41 is fit on over a bored upper portion 27 ofsaid body 2, as shown, for example, in FIG. 1 a.

As also shown in FIG. 1a, said skirt 41 of the cap 4 may have the sameexterior cross section as that of said tubular body 2 or of said skirt21 of said tubular body 2, so as to have a dispenser 1, 1′, 1″ that,when closed, has the same cross section over its entire height H.

In order to have a typically leak-proof dispenser, it may beadvantageous that said head 40 include a means 400 for reversiblysealing said opening 22, 220, 221, 222, typically a circular orperipheral rib coming to rest against or surrounding said axialprojection 26, as shown in FIG. 1 a. In this case, besides thecooperation of the skirt 41 with the upper bored portion 27 of the body2, the cap 4 includes a complementary means of ensuring the tightness ofthe dispenser in the case where said product includes at least onevolatile component.

The cap may cooperate with said body in many different ways. Thus, saidcap 4 may cooperate with said body 2 at its upper portion or with saidarch 20, so as to form a reversible means of cooperation 6, typically byscrewing, by snapping on 61 via the cooperation of a male element and afemale element, by fitting on 60, or by means of a hinge 62. Cooperationby means of fitting on or snapping on has been shown in FIG. 1 a. Inthis case, the upper bored portion 27 may include a rib 270 that maycooperate with a groove 410 formed on the inside surface of the skirt 41of the cap 4. A hinge-type or snap-on type cooperation has been shown inFIG. 3 a. In addition, as shown in FIG. 3 b, said cap 4 may be madeintegral with said body by means of a tab 63, so as to form a singlepiece.

According to the invention, said tubular body 2, and/or said piston 3,and/or said cap 4 may be made of a plastic material, typically molded,said plastic material possibly consisting of a transparent plasticmaterial. Advantageously, all of the parts forming said dispenser 1, 1′,1″ are molded parts made of a thermoplastic material, typicallypolyolefin, and most often PP.

When closed, said dispenser according to the invention may typicallyhave a height H and a largest dimension D such that H/D ranges between0.80 and 1.4, so as to form a compact dispenser.

According to one embodiment of the invention shown in FIG. 6, said cap 4may have an upper profile 42 capable of cooperating reversibly with saidlower portion 23 of said skirt 21 of said tubular body 2, typically bysnapping on axially, so as to be able to stack several dispensers 1, 1′,1″ and form a stick or set 7 of dispensers 1, 1′, 1″ made integral witheach other temporarily, said lower portion 23 of said skirt 21 of afirst dispenser cooperating axially with said cap 4, or said upperportion 24 of said skirt 21 of a second dispenser placed underneath thefirst.

As shown in FIG. 4 c, the invention may include dispensers 1′″ whosearch 20 is limited to a contracted section of said skirt 21 formed by acircular rib 204 having a height ranging typically from 0.5 to 2 mm,such dispensers being used to package solid products capable ofdeforming under stress, e.g., powders for blocks of compressed powderfor makeup.

Another object of the invention consists of a set of dispensers 7, 8typically grouping together several dispensers 1, 1′, 1″, 1′″ accordingto the invention, these dispensers possibly differing by the natureand/or the color of the makeup products 5, or by the nature or degree offineness of said means of application. As a matter of fact, owing inparticular to the compactness and relatively low cost of said dispenser1, 1′, 1″, 1′″, the invention has made it possible to develop sets ofdispensers 7, 8 that actually solve numerous problems encountered by theusers, i.e., arranging various cosmetic products or various means ofapplication even inside one handbag. However, as concerns the use ofhandbags, besides searching for keys, another well-known problem lies inthe classic search for makeup products. In this respect, the sets 7, 8according to the invention solve these two problems simultaneously.

According to a first embodiment, and as shown in FIG. 6, said set may bea set 7 formed by rendering one dispenser integral with anotherdispenser, so as to obtain a stack of N dispensers 1, 1′, 1″, 1′″including said upper profile 42, so as to thereby obtain a so-called“vertical” makeup set 7. According to this embodiment, it may beadvantageous for said upper profile 42 to be selected such that, whensaid first dispenser is separated from said second dispenser, or moregenerally when a dispenser of row n is separated from a dispenser of rown+1 situated above the dispenser of row n in said stick 7, thisseparation does not result in the separation of the cap 4 from thedispenser of row n, with the result being that the piston 3 of thedispenser n+1 is accessible.

According to a second embodiment, and as shown in FIGS. 5 a to 5 d, saidset may be a set of N dispensers 1, 1′, 1″, 1′″ made reversibly integralwith each other on a typically plane common support 80, 81, 82, each ofsaid dispensers being accessible separately from the others so as toform a so-called “horizontal” or “plane” makeup set 8. Various variantsof this embodiment have been shown in FIGS. 5 b to 5 d.

Irrespective of the embodiment chosen, the number N of dispensers 1, 1′,1″, 1′″ can typically range from 2 to 20, and more preferably from 4 to10. It is possible to have sets of varying sizes with, for example, alarge size set comprising 20 dispensers or more, that would be typicallynon-transportable and intended for bathroom use, and a small size setwith, for example, 2 to 6 dispensers intended to be transported in ahandbag, the selection of dispensers to be carried along possiblyvarying each day.

Another object of the invention consists of the use of said dispenser 1,1′, 1″, 1′″ or said set of dispensers 7, 8 for sampling or promotingsaid product 5, or for the commercial distribution of said product 5.For this use, said product may be selected from among the cosmetic ordermatological products applied to the skin or face, and typically:

a) a paste-like product of the lipstick or makeup pencil type,

b) a product in the form of a cream, gel or paste,

c) a product in the form of a powder,

said product having a viscosity suited, in particular, to the surfacearea S′ of said opening or of said openings, or else said surface areaS′ being suited to the viscosity of said product such that said, pistonis able to slide while expelling said product through said opening underthe effects of an axial force ranging typically from 0.2 N to 2 N. As amatter of fact, the invention is not limited to cosmetic products alone,it also applies to any care product for the skin, face and lips inparticular, whether it involves dermatological products orskin-protective products of the sun cream type.

Exemplary Embodiments

All of the figures consist of exemplary embodiments. All of thedispensers 1, 1′, 1″, 1′″ were made of PP or PE, by means of molding.More specifically, the dimensions H and d were use in FIGS. 1 a and 1 b.

Very many dispensers have been manufactured by varying in particular thedimensions of the openings. Thus, on the one hand, with a plurality ofsmall-diameter openings 222, typically ranging from 0.4 to 1 mm, it waspossible to package liquid products that did not have a tendency to flowout, even when holding the dispenser upside down. On the other hand,with a dispenser similar to the one shown in FIG. 4 c, it was possibleto package a solid product with relatively high cohesiveness such as acompact powder generally packaged in boxes, the residual plasticity ofthe compact powder being sufficient, however, to enable a certain degreeof creep or a certain degree of deformation under manual stress. In thiscase, the ratio S′/S was close to 0.95, the arch 20 forming an edge 204that was sufficiently constricted in relation to the skirt 21 of thebody 2 so that said solid product was retained inside said chamber, butnot too constricted, however, for manual pressure applied to the pistonto be able to advance said product as it was being used. In the case ofthis solid product, a cap 4 with a built-in applicator was used.

Sets have also been manufactured of the type like set 8, diagrammed inFIGS. 5 a to 5 d, but in which some dispensers 1 were replaced bycomplementary means of application, as if, with an arrangement such asthe one shown in FIG. 5 b, the body of the dispenser had been replacedin some cases by a complementary means of application.

Generally speaking, in the case of the dispensers manufactured, and inview of their relatively small dimensions, the frictional forces betweenpiston 3 and skirt 21 are sufficient for the piston to maintain theposition in which it is situated, with the result being that it was notnecessary to equip the inside of the skirt 21 with non-return means sothat the piston is able to move upward only. However, these frictionalforces in no way prevent the piston from being pushed forward manually.Thus, in the case of a dispenser 1 according to FIG. 1 a, the weight ofthe product contained inside the chamber does not carry the pistondownward, even when-the cap is removed. The case would not be the samewith similar but larger size dispensers.

In addition, as shown in FIG. 1 a, the head 30 and the skirt 31 of thepiston 3 generally connect together along an arc, both in order tofacilitate the insertion of the piston into the skirt and to match theinterior profile of the connection between the skirt 21 and the arch 20or that which serves as an arch.

Advantages of the Invention

This invention has numerous advantages. On the one hand, it disclosesdispensers that can be customized to the packaging of all sorts ofproducts, typically by selecting an adequate opening diameter. On theother hand, it solves the problems of bulkiness associated with thediversity of products, in particular makeup or skin care or lip careproducts, while traveling or moving. In addition, it offers new,economical and sturdy dispensers, as well as new sets of dispensers thatmeet the requirements of the users, while at the same time significantlyrenewing the product supply for the cosmetic or skin care productsmarket. List of Reference Marks Dispenser 1, 1′, 1″, 1′′′  Vertical axis10 Tubular body 2  Arch 20   Plane grate 200   Domed grate 201   Dishedgrate 202   Radial extension 203   Circular edge or rib 204  Skirt 21 Opening 22   Circular opening 220    Lip 2200   Opening - radial slot221    Lips 2210   Multiple openings 222  Lower portion of 21 23  Upperportion of 21 24  Bottom surface of 20 25  Axial projection 26comprising 22, 222  Upper bored portion 27 cooperating with 31 Ribcooperating with 410 270  Means of application 28 Piston 3  Head 30  Upper surface 300  Skirt 31  Blind hole 32 Cap 4  Head 40   Means forplugging 22 400  Skirt 41   Groove cooperating with 270 410  Upperprofile 42  Means of application 43 Product 5 Means of cooperationbetween 2 and 4 6  Fitting on 60  Snapping on 61  Hinge 62  Common tab63  Means of fastening 4 64 “Vertical” or stick-like makeup set 7“Plane” makeup set 8, 8′  Support of 1 with movable 1 80   Positivelyconnecting 800   cavities  Support of 1 with 4 fixed to 8 81   Means ofassembling 4 onto 81 810  Support of 1 forming 4 82   Cap-forming walls820  Support of 8′   Open cavity for 3 830   Cavity with bottom for 43.831 Chamber formed by 20 + 21 + 3 9

1. Dispenser (1. 1′, 1″) of a product (5), typically a paste-likecosmetic product, comprising: a) a tubular body (2) containing saidproduct (5) and comprising a skirt (21) open at its lower part andclosed at its upper part by an arch (20) equipped with an opening (22),or possibly with multiple openings (222), having a total surface area S′enabling the passage of said product (5) with a view to its use orapplication onto a support, b) a piston (3) capable of sliding, in atypically leak-proof manner, inside of said skirt (21), over a strokeheight h, so as to form a variable-volume chamber (9) containing saidproduct and to compress said product with a view to forcing the passageof said product (5) through said opening (22, 222), c) a cap (4)designed to seal said opening (22, 222), typically comprising a head(40) and a skirt (41) cooperating reversibly with said tubular body (2)at its upper part or with said arch (20), characterized in that: 1) saidskirt (21) and said arch (20) form a single piece, typically a moldedpiece made of plastic, 2) said piston (3) includes a lower skirt (31)typically forming, together with said head (30), a blind hole (32), soas to facilitate the sliding of said piston (3) inside said skirt (21)of said body, and to enable the insertion of said finger ensuring saidpush into said blind hole, 3) said head (40) includes a means (400) forreversibly sealing said opening (22, 220, 221, 222), 4) said skirt (21)has an interior horizontal section with a surface area S and with asmaller interior dimension d ranging typically from 10 mm to 20 mm, saidstroke height h ranging typically from 10 to 25 mm, so as tosimultaneously, and typically with a single hand, enable said dispenser(1, 1′, 1″) to be grasped manually, typically between the thumb andmiddle finger, and said piston (3) to be pushed manually using onefinger, typically the index finger, so as to force, in a typicallycontrolled manner, said passage of said product through said opening(22, 222) having a surface area S′≦0.95.S, typically selected withrespect to the nature and the viscosity of said product (5), saiddispenser (1, 1′, 1″) being an extension of said finger and therebyforming a so-called “fingertip” dispenser that is at once economical,compact and versatile.
 2. Dispenser as claimed in claim 1, in which saidskirt (21) of said body (2) has a round, oval or square interior and/orexterior cross section, said interior cross section corresponding tothat of said piston (3) and having a surface area S ranging typicallyfrom 50 mm² to 400 mm², and more preferably from 150 to 250 mm². 3.Dispenser as claimed in claim 1, in which said arch (20) includes orforms at least one radial extension (203) partially sealing said surfacearea S, so that the surface area S′ of said opening (22, 222) typicallyranges between 0.2.S and 0.8.S, said surface area being chosen, inparticular, with respect to the viscosity of said product, and so as totypically form multiple openings.
 4. Dispenser as claimed in claim 1, inwhich said arch (20) include or forms a grate, typically plane (200),but potentially domed (201), or dished (202), equipped with a largenumber of openings, said number typically ranging from 5 to 50, andhaving a surface area S′<0.7.S.
 5. Dispenser as claimed in claim 1, inwhich said opening (22) is a radial slot (221) having a length typicallyclose to d, and a surface area S′<0.5.S.
 6. Dispenser as claimed inclaim 5, in which said radial slot (221) forms potentially flexible lips(2210), being typically parallel, and typically angled so as to form anapplicator for said product over a width d′.
 7. Dispenser as claimed inclaim 1, in which said opening 22 is a circular opening (220) having adiameter typically less than 5 mm, and a surface area S′<0.3.S, andtypically forming a circular lip (2200) so as to ensure a localized orspot application of said product (5).
 8. Dispenser as claimed in claim1, in which said arch (20), equipped with said opening (22, 220, 221,222), forms a means of application of said product.
 9. Dispenser asclaimed in claim 1, in which said cap (4) includes a means ofapplication (43) of said product (5).
 10. Dispenser as claimed in claim1, in which said piston (3) includes a head (30) whose top surface isparallel to said arch (20) or to the interior surface (25) of said arch(20), so as to be capable of expelling almost all of said product (5)contained inside said body (2), or said chamber (9), when said piston(3) is at its end of travel position.
 11. Dispenser as claimed in claim1, in which said cap (4) includes said head (40) and said skirt (41),said skirt (41) having a height typically ranging from h/2 to h. 12.Dispenser as claimed in claim 11, in which said skirt (41) has the sameexterior cross section as that of said tubular body (2) or of said skirt(21) of said tubular body (2), so as to have a dispenser (1, 1′, 1″)that, when closed, has the same cross section over its entire height H.13. Dispenser as claimed in claim 1, in which said cap 4 cooperates withsaid body (2) at its upper portion or with said arch (20), typically byscrewing on, by snapping on (61) via cooperation of a male element and afemale element, by fitting on (60), by means of a hinge (62), so as toform a reversible means of cooperation (6).
 14. Dispenser as claimed inclaim 1, in which said cap (4) is made integral with said body by meansof a tab (63), so as to form a single piece.
 15. Dispenser as claimed inclaim 1, in which said tubular body (2), and/or said piston (3), and/orsaid cap (4) is/are made of a plastic material, typically molded, thatmay potentially be a transparent plastic material.
 16. Dispenser asclaimed in claim 1 that, when closed, has a height H and a largerdimension D such that H/D ranges between 0.80 and 1.4.
 17. Dispenser asclaimed in claim 1, in which said arch (20) is a constricted portion ofsaid skirt (21) formed by a circular rib (204) having a height typicallyranging from 0.5 to 2 mm, so as to package solid products capable ofdeforming under stress, typically powders for blocks of compressedpowder for makeup.
 18. Dispenser as claimed in claim 1, in which saidcap (4) has an upper profile (42) capable of cooperating reversibly withsaid lower portion (23) of said skirt (21) of said tubular body (2),typically by snapping on axially, so as to be able to stack severaldispensers (1, 1′, 1″) and to form a stick or set (7) of dispensers (1,1′, 1″) made temporarily integral with each other, said lower portion(23) of said skirt (21) of a first dispenser cooperating axially withsaid cap (4), or said upper portion (24) of said skirt (21), of a seconddispenser placed underneath the first.
 19. Set of dispensers as claimedin claim 1, typically grouping together several dispensers (1, 1′, 1″)possibly differing by the nature and/or the color of the makeup products(5), or by the nature or degree of fineness of said means ofapplication.
 20. Set as claimed in claim 19, formed by making onedispenser integral with another dispenser, so as to obtain a stack of Ndispensers (1, 1′, 1″) comprising said upper profile (42), so as tothereby obtain a so-called “vertical” makeup set (7).
 21. Set as claimedin claim 20, in which said upper profile (42) is selected such that,when said first dispenser is separated from said second dispenser, ormore generally speaking, when a dispenser of row n is separated from adispenser of row n+1 situated above the dispenser of row n in said stick(7), this separation does not result in the separation of the cap (4)from the dispenser of row n, with the result being that the piston (3)of the dispenser n+1 is accessible.
 22. Set as claimed in claim 20,formed by making N dispensers (1, 1′, 1″) reversibly integral with eachother on a typically plane common support (80, 81, 82), each of saiddispensers being accessible separately from the others so as to form aso-called “horizontal” or “plane” makeup set (8).
 23. Set as claimed inclaim 20, in which N typically ranges from 2 to 20, and more preferablyfrom 4 to
 10. 24. Use of said dispenser (1, 1′, 1″) as claimed in claim1, or of said set of dispensers (7, 8), as claimed in any of claims 19to 23, for the sampling or the promotion of said product (5), or for thecommercial distribution of said product (5).
 25. Use as claimed in claim24, in which said product is selected from among the cosmetic ordermatological products applied to the skin or face, and typically: d) apaste-like product of the lipstick or makeup pencil type, e) a productin the form of a cream, gel or paste, f) a product in the form of apowder, said product having a viscosity suited, in particular, to thesurface area S′ of said opening or said openings, or else said surfacearea S′ being suited to the viscosity of said product, so that saidpiston is able to slide while expelling said product through saidopening under the effects of an axial force ranging typically from 0.2 Nto 2 N.